In sequence events - error?

Question

I am trying to make a sequence of events happen one after another. I have a background image that I want to fade in, blur, and then a panel slides in. Flash is giving me 2 errors when I test:
Description: 1119: Access of possibly undefined property MOTION_CHANGE through a reference with static type flash.events:Event.
Source: blurTween.addEventListener(TweenEvent.MOTION_CHANGE, onMotionChanged);
Description: 1119: Access of possibly undefined property MOTION_FINISH through a reference with static type flash.events:Event.
Source: blurTween.addEventListener(TweenEvent.MOTION_FINISH, onMotionFinish);
Thanks.
import fl.transitions.*
import fl.transitions.Tween
import fl.transitions.easing.*
import flash.filters.BlurFilter
import fl.transitions.TweenEvent
var BgTweenAlpha:Tween = new Tween(behindTheBrushBg, "alpha", Strong.easeOut, 0, 1, 1, true);
BgTweenAlpha.addEventListener(TweenEvent.MOTION_FINISH, onAlphaFinish);
function onAlphaFinish(TweenEvent:Event):void{
    var totalBlur:Number = 0;
    var blur:BlurFilter = new BlurFilter(totalBlur, totalBlur, 3);
    behindTheBrushBg.filters = new Array(blur);
    var blurTween = new Tween(blur, "blurX", Strong.easeOut, blur.blurX, 8, 1, true);
    blurTween.addEventListener(TweenEvent.MOTION_CHANGE, onMotionChanged);
        function onMotionChanged(TweenEvent:Event):void{
            blur.blurY = blur.blurX;
               behindTheBrushBg.filters = new Array(blur);
    blurTween.addEventListener(TweenEvent.MOTION_FINISH, onMotionFinish);
function onMotionFinish(TweenEvent:Event):void{
    var panelTweenX:Tween = new Tween(behindTheBrushPanel, "x", Strong.easeOut, -460, 0, 1, true);

Answer 1

From a brief look you pass a wrong event into the event handler:
function onMotionFinish(TweenEvent:Event):void{
It should be:
function onMotionFinish(event:TweenEvent):void{